Headboard



FIG. 1 is a front right side perspective view of a headboard showing my new design, the left side being a mirror image thereof;

FIG. 2 is a front view thereof;

FIG. 3 is a cross-sectional view at III--III of FIG. 2;

FIG. 4 is a cross-sectional view at IV--IV of FIG. 2;

FIG. 5 is a rear view of FIG. 1; and,

FIG. 6 is a side view of FIG. 1.

The broken lines are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a headboard, as shown as described. 